Xerox 4400DT Service Manual - Page 438
Laser Control, Laser Self-Check, Printable Area
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Laser Control Laser Self-Check The Laser Self-Check is complete when the Laser Diode laser power reaches the value that was set in NVRAM Configuration, and when the READY interval for the SOS signal is approximately 98% of the SOS interval when the Laser Motor is rotating. The following table illustrates the Laser Motor and Laser Diode Control in Various Printer Modes: Laser Motor and Laser Diode Control in Various Printer Modes Printer Mode Laser Motor and Laser Diode Control Printing The Laser Motor and the Laser Diode are both controlled by the Engine Logic Board. Diagnostic The Laser Motor and the Laser Diode are always on. Printable Area Note: The Printer is capable of edge-to-edge printing. Within the 4 mm border (4 sides) the printer will print any data 6 point Arial or larger. Printable Area Phaser 4400 Laser Printer Service Manual 8-25
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